How could the Royal Navy have obtained ten Implacable-class carriers?
Short answerIt would need to adopt the Implacable-sized design during the Illustrious program, with the deck-edge-lift variant offering a better ship.
NotesBritain would need to move directly to an Implacable-scale design while the Illustrious group was being built. That makes the larger class a program substitution, not an easy addition to historical construction. The comparison also includes a studied Implacable variant with deck-edge lifts, which would retain armour while improving aircraft handling. The exchange links fleet numbers to an early design decision rather than a late wartime order.